Public Notice: Northwestern States Portland Cement Co. Superfund Site, Mason City, Cerro Gordo County, Iowa

Northwestern States Portland Cement Co. Superfund Site, Mason City, Cerro Gordo County, Iowa
How to Comment

EPA is neither requesting nor accepting comments on this public notice. It is for informational purposes only.

Publish Date

Summary

Seventh Five-Year Review Completed

The U.S. Environmental Protection Agency (EPA) Region 7 has started the Seventh Five-Year Review for the Northwestern States Portland Cement Co. Superfund Site. Five-Year Reviews are required by the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), commonly known as Superfund, when hazardous substances remain on-site above levels that permit unrestricted use and unlimited exposure.

Five-Year Reviews provide an opportunity to evaluate the site remedy to determine whether it remains protective of human health and the environment. This Five-Year Review Report should be completed by June 2026.

Site project information and previous Five-Year Reviews are available to the public at web repositories. To view cleanup documents, please visit EPA’s Site Profile page (see Site Documents & Data).

 If you do not have internet access, you can view these documents online at this location: 

Mason City Public Library
225 2nd St. SE
Mason City, IA 50401
641-421-3668

If you have questions about the site, please contact:

Shaylee Borcsani
Community Involvement Coordinator
U.S. EPA Region 7 (CEERD/CPSIB)
11201 Renner Boulevard
Lenexa, KS 66219
Email: borcsani.shaylee@epa.gov
Phone: 913-551-7713
Toll-free: 1-800-223-0425

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Last updated on May 8, 2026